Test___Unit_3_Nov_16

# Test___Unit_3_Nov_16 - AP Statistics and Data Management...

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AP Statistics and Data Management Name: ___________________________________ Knowledge ___ Application and Thinking ___ Communication ___ Total ____ 18 11 10 39 Knowledge questions Multiple Choice – circle the letter for the best possible answer - mark each 1. A factory has 20 assembly lines producing a popular toy. To inspect a representative sample, quality control staff randomly selected 5 toys from each line’s output. Was this a simple random sample? (a) Yes, because the toys were selected at random. (b) Yes, because each toy produced had an equal chance to be selected. (c) Yes, because a stratified sample is a type of simple random sample. (d) No, because not all combinations of 100 toys could have been chosen. (e) No, because toys do not come off the assembly line at random. 2. Does regular exercise decrease the risk of cancer? A researcher finds 200 women over 50 who exercise regularly, pairs each woman with a woman who has a similar medical history but does not exercise, then follows the subjects for 10 years to see which group develops more cancer. This is a (a) survey (b) retrospective study (c) prospective study (d) randomized experiment (e) matched experiment 3. Which is important in designing a good experiment? I. Randomization in assigning subjects to treatments. II. Control of potentially confounding variables. III. Replication of the experiment on a sufficient number of subjects.

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## This note was uploaded on 01/11/2010 for the course PSYC 200 at Yale.

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Test___Unit_3_Nov_16 - AP Statistics and Data Management...

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